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LT1818/LT1819

18189f

ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C (Note 9). VS = 5V, 0V; VCM = 2.5V, RL to 2.5V unless otherwise noted.

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: Differential inputs of

±6V are appropriate for transient operation

only, such as during slewing. Large sustained differential inputs can cause

excessive power dissipation and may damage the part.

Note 3: A heat sink may be required to keep the junction temperature

below absolute maximum when the output is shorted indefinitely.

Note 4: Input offset voltage is pulse tested and is exclusive of warm-up

drift.

Note 5: With

±5V supplies, slew rate is tested in a closed-loop gain of –1

by measuring the rise time of the output from –2V to 2V with an output

step from –3V to 3V. With single 5V supplies, slew rate is tested in a

closed-loop gain of –1 by measuring the rise time of the output from 1.5V

to 3.5V with an output step from 1V to 4V. Falling edge slew rate is not

production tested, but is designed, characterized and expected to be within

10% of the rising edge slew rate.

Note 6: Full power bandwidth is calculated from the slew rate:

FPBW = SR/2

πVP

Note 7: This parameter is not 100% tested.

Note 8: The LT1818C/LT1818I and LT1819C/LT1819I are guaranteed

functional over the operating temperature range of – 40

°C to 85°C.

Note 9: The LT1818C/LT1819C are guaranteed to meet specified

performance from 0

°C to 70°C and is designed, characterized and

expected to meet the extended temperature limits, but is not tested at

–40

°C and 85°C. The LT1818I/LT1819I are guaranteed to meet the

extended temperature limits.

Note 10: Thermal resistance (

θJA) varies with the amount of PC board

metal connected to the package. The specified values are for short traces

connected to the leads. If desired, the thermal resistance can be

significantly reduced by connecting the V– pin to a large metal area.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IOUT

Output Current

VOUT = 1.5V or 3.5V, 30mV Overdrive

±30

±50

TA = 0°C to 70°C

±25

TA = –40°C to 85°C

±20

ISC

Output Short-Circuit Current

VOUT = 2.5V, 1V Overdrive (Note 3)

±80

±140

TA = 0°C to 70°C

±70

TA = –40°C to 85°C

±50

Slew Rate

AV = 1

1000

µs

AV = –1 (Note 5)

450

800

µs

TA = 0°C to 70°C

375

µs

TA = –40°C to 85°C

300

µs

FPBW

Full Power Bandwidth

2VP-P (Note 6)

125

MHz

GBW

Gain Bandwidth Product

f = 4MHz, RL = 500Ω

240

360

MHz

TA = 0°C to 70°C

230

MHz

TA = –40°C to 85°C

220

MHz

tr, tf

Rise Time, Fall Time

AV = 1, 10% to 90%, 0.1V Step

0.7

tPD

Propagation Delay

AV = 1, 50% to 50%, 0.1V Step

1.1

Overshoot

AV = 1, 0.1V, RL = 100Ω

Harmonic Distortion

HD2, AV = 2, f = 5MHz, VOUT = 2VP-P, RL = 500Ω

–72

dBc

HD3, AV = 2, f = 5MHz, VOUT = 2VP-P, RL = 500Ω

–74

dBc

Differential Gain

AV = 2, RL = 150Ω

0.07

Differential Phase

AV = 2, RL = 150Ω

0.07

DEG

Supply Current

Per Amplifier

8.5

TA = 0°C to 70°C

TA = –40°C to 85°C

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